Outdoor Burning - Benton Clean Air Agency
This website FAQ has the rules about out door fires, and also how to tell if its a "no burn day" ( updated at 9am every day). This applies to the entire Tri Cities region on the Benton County side, including Prosser, Benton City and unincorporated areas nearby the Tri Cities. If you dont know/ can't find an answer, and are embarrassed to ask "in public" or in front of your friends, ask a librarian to help.
The basics
There are 3 types of rules about burn days- 1 anyone can burn weeds or what is allowed by law, on their property, 2 residential burn is prohibited but agricultural is allowed (but requires a permit), 3 no burning whatsoever
Residential fires like BBQ or fire pits are allowed, but there are restrictions as to size and location (see FAQ)
Always check burn day regs before you burn- the rules exist for a reason, there are people who know things